hw/virtio/vhost-user:Remove dead assignment in scrub_shadow_regions()

Clang static code analyzer show warning:
hw/virtio/vhost-user.c:606:9: warning: Value stored to 'mr' is never read
        mr = vhost_user_get_mr_data(reg->userspace_addr, &offset, &fd);
        ^    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Reported-by: Euler Robot <euler.robot@huawei.com>
Signed-off-by: Chen Qun <kuhn.chenqun@huawei.com>
Reviewed-by: Raphael Norwitz <raphael.norwitz@nutanix.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <20200827110311.164316-6-kuhn.chenqun@huawei.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

diff --git a/hw/virtio/vhost-user.c b/hw/virtio/vhost-user.c
index d7e24237625f791774437add0e710a2b119e7982..9c5b4f7fbcda6931daa754395d6bab57926b924b 100644 (file)
--- a/hw/virtio/vhost-user.c
+++ b/hw/virtio/vhost-user.c
@@ -603,7 +603,7 @@ static void scrub_shadow_regions(struct vhost_dev *dev,
      */
     for (i = 0; i < dev->mem->nregions; i++) {
         reg = &dev->mem->regions[i];
-        mr = vhost_user_get_mr_data(reg->userspace_addr, &offset, &fd);
+        vhost_user_get_mr_data(reg->userspace_addr, &offset, &fd);
         if (fd > 0) {
             ++fd_num;
         }